T/YNSX 007-2022 Large-caliber High Melt Point High Density Polyethylene (HMWHDPE) Hollow Plastic Steel Composite Coiled Wall Sewer Pipe
T/YNSX 007-2022 Large-caliber High Melt Point High Density Polyethylene (HMWHDPE) Hollow Plastic Steel Composite Coiled Wall Sewer Pipe
Basic Information
Scope
Main technical content: This document specifies the terms and definitions, symbols and abbreviations, materials, marking and classification, pipe structure and connection methods, technical requirements, test methods, inspection rules, marking, transportation, and storage of large-diameter high-molecular-weight high-density polyethylene (HMWHDPE) hollow plastic-steel composite winding structure wall drainage pipes. This document is applicable to large-diameter high-molecular-weight high-density polyethylene (HMWHDPE) hollow plastic-steel composite winding structure wall drainage pipes (hereinafter referred to as "pipes") used for long-term transportation of media with a temperature below 45 ℃, including urban domestic drainage, industrial drainage, and farmland drainage.